Merge pull request #11275 from cakephp/fix-slug-regex

Fix incorrect regex in Text::slug().

src/Utility/Text.php

@@ -1108,7 +1108,7 @@ class Text
 
         $regex = '^\s\p{Ll}\p{Lm}\p{Lo}\p{Lt}\p{Lu}\p{Nd}';
         if ($options['preserve']) {
-            $regex .= '|' . preg_quote($options['preserve'], '/');
+            $regex .= preg_quote($options['preserve'], '/');
         }
         $quotedReplacement = preg_quote($options['replacement'], '/');
         $map = [

tests/TestCase/Utility/TextTest.php

@@ -1810,8 +1810,8 @@ HTML;
                 'cl-ean-me'
             ],
             [
-                'cl#ean(me.jpg', ['preserve' => '.'],
-                'cl-ean-me.jpg'
+                'cl#e|an(me.jpg', ['preserve' => '.'],
+                'cl-e-an-me.jpg'
             ],
         ];
     }